works for me

Trying to mine SHA256t on Zpool, every share is rejected with "reject reason: Low difficulty share", unless using "-m 256"

I do wonder if its pool side issue or miner?

cpuminer-avx2.exe -o stratum+tcp://sha256t.mine.zpool.ca:3339 -u MM8RmXUgxDwHJxrC54muF7KHciSCFS3gx3 -p c=LTC -a sha256t


ps. tested oldest versions, and I see same issue in 3.5.9.1 and 3.6.3

It worked with the original coin that introduced the algo. That error often means the hash is incomplete but I've also seen
it due to a pool config error. This could be a slightly different algo using the same name but I'd have to compare with a
working miner.

It would be great if you didn't quote an entire, long, unrelated post and did some reading before
posting.

It looks like the original coin was revived.

https://bt.irlbtc.com/view/2313497.msg23484925#msg23484925

It's a simple to change the difficulty targetting in software but I want some confirmation that zpool is correct
before I make the change. Has anyone tried other pools?

same on https://pool.nosekefik.com

cpuminer-opt-3.8.4.1

Fixed sha256t low difficulty rejects.
Fixed compile error on CPUs with AVX512.

https://github.com/JayDDee/cpuminer-opt/releases/tag/v3.8.4.1

works fine on i5-7600k

Hello,

I've got issue running it on Debian stretch.
SIGSEGV on an external lib. (libcurl.so.4)

Which releases of Openssl and curl (libcurl libcurl-gnutls libcurl-openssl) are you using?
Mine are listed at the end of this thread.

Nb. I've got exactly the same issue trying to run cpuminer-multi from tpruvot

Thank you for your work.

Guillaume

(chrooted_2)gigi@clevo:~/cpuminer-opt$ uname -a
Linux clevo.gigi.edu 4.13.16+ #1 SMP Tue Jan 30 12:58:17 CET 2018 x86_64 GNU/Linux
(chrooted_2)gigi@clevo:~/cpuminer-opt$ lsb_release -a
No LSB modules are available.
Distributor ID:   Debian
Description:   Debian GNU/Linux 9.4 (stretch)
Release:   9.4
Codename:   stretch

(chrooted_2)gigi@clevo:~/cpuminer-opt$ ./cpuminer --benchmark -a cryptonight

         **********  cpuminer-opt 3.8.4.1  ***********
     A CPU miner with multi algo support and optimized for CPUs
     with AES_NI and AVX2 and SHA extensions.
     BTC donation address: 12tdvfF7KmAsihBXQXynT6E6th2c2pByTT

CPU: Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz.
SW built on Mar 23 2018 with GCC 6.3.0.
CPU features: SSE2 AES AVX AVX2.
SW features: SSE2 AES AVX AVX2.
Algo features: SSE2 AES.
Start mining with AES SSE2.

Segmentation fault (core dumped)

(chrooted_2)gigi@clevo:~/cpuminer-opt$ gdb cpuminer core
GNU gdb (Debian 7.12-6) 7.12.0.20161007-git
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from cpuminer...(no debugging symbols found)...done.
[New LWP 12549]
[New LWP 12548]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `./cpuminer --benchmark -a neoscrypt'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x000015381bea7900 in _dl_name_match_p (name=0x55b113d1b551 "libcurl.so.4", map=map@entry=0x15381c0bc170) at dl-misc.c:289
289   dl-misc.c: No such file or directory.
[Current thread is 1 (Thread 0x15381579d700 (LWP 12549))]
(gdb) bt
#0  0x000015381bea7900 in _dl_name_match_p (name=0x55b113d1b551 "libcurl.so.4", map=map@entry=0x15381c0bc170) at dl-misc.c:289
#1  0x000015381bea052b in do_lookup_x (undef_name=undef_name@entry=0x55b113d1b5c4 "curl_easy_init", new_hash=new_hash@entry=4223258079, old_hash=old_hash@entry=0x15381518b160,
    ref=0x55b113d1af68, result=result@entry=0x15381518b170, scope=<optimized out>, i=<optimized out>, version=0x15381c0a38e8, flags=5, skip=<optimized out>, type_class=1,
    undef_map=0x15381c0bc170) at dl-lookup.c:558
#2  0x000015381bea10c1 in _dl_lookup_symbol_x (undef_name=0x55b113d1b5c4 "curl_easy_init", undef_map=0x15381c0bc170, ref=ref@entry=0x15381518b228, symbol_scope=0x15381c0bc4c8,
    version=0x15381c0a38e8, type_class=type_class@entry=1, flags=5, skip_map=0x0) at dl-lookup.c:833
#3  0x000015381bea5c54 in _dl_fixup (l=<optimized out>, reloc_arg=<optimized out>) at ../elf/dl-runtime.c:111
#4  0x000015381bead35a in _dl_runtime_resolve_xsavec () at ../sysdeps/x86_64/dl-trampoline.h:125
#5  0x000055b113d23ebb in ?? ()
#6  0x000015381b5da494 in start_thread (arg=0x15381579d700) at pthread_create.c:333
#7  0x000015381a0fdacf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97
(gdb)

(chrooted_2)gigi@clevo:~/cpuminer-opt$ apt list |grep install | grep curl

WARNING: apt does not have a stable CLI interface. Use with caution in scripts.

curl/stable,now 7.52.1-5+deb9u4 amd64 [installed]
curlftpfs/stable,now 0.9.2-9+b1 amd64 [installed]
libcurl3/stable,now 7.52.1-5+deb9u4 amd64 [installed]
libcurl3-gnutls/stable,now 7.52.1-5+deb9u4 amd64 [installed,automatic]
libcurl4-openssl-dev/stable,now 7.52.1-5+deb9u4 amd64 [installed]
(chrooted_2)gigi@clevo:~/cpuminer-opt$ apt list |grep install | grep ssl

WARNING: apt does not have a stable CLI interface. Use with caution in scripts.

libcurl4-openssl-dev/stable,now 7.52.1-5+deb9u4 amd64 [installed]
libssl-dev/stable,now 1.1.0f-3+deb9u1 amd64 [installed]
libssl-doc/stable,now 1.1.0f-3+deb9u1 all [installed,automatic]
libssl1.0.2/stable,now 1.0.2l-2+deb9u2 amd64 [installed]
libssl1.1/stable,now 1.1.0f-3+deb9u1 amd64 [installed]
openssl/stable,now 1.1.0f-3+deb9u1 amd64 [installed,automatic]